DE10352825A1 - Cutter and perforator for e.g. foils and similar consists of two connected hollow cylinders with long slots defining a gap for extraction of foil, and with a blade in a recess - Google Patents

Abstract

The device consists of two hollow cylinders with longitudinal sots, containing a roll of material (4), which is pulled out and cut/perforated by pressure applied to the device. Outer and inner cylinder (1,2) are connected at hinge points (5), or via a hinge, and after assembly can be opened by a spring. Alternatively, the inner cylinder is formed with a spring lip (6), which has the same purpose. The opening process is limited by a stop. When in rest position, this defines a gap through which the foil can be drawn out. The stop is deactivated for insertion of a new roll. One of the cylinder has a recess with a blade (3).

Description

Of the Invention proposal refers to a dispenser container for roll-shaped plastic or other consumables in the household, catering or in the packaging industry.

It is common practice to sell household foil such as cling film, aluminum foil or even baking paper (hereinafter called foil) in a cardboard box, for example, as in DE 29520084 U1 and CA 2340574 A1 described, has a lying on the outside tear-off.

Furthermore, there are devices for fixed mounting, for example, on a wall, or with a firm stand, which can be separated either with a sharp edge, or as in DE 4308135 C2 described are equipped with a cutting rule.

The publication CH 639915 A5 describes a dispenser housing for a roll of tape, in which a razor sharp tear-off edge is mounted in a flat slot channel so that a user is protected against undesired contact.

The publication DE 3779925 T2 Finally, a dispenser for material in tape or roll form, which has a device for leading out, can be separated protected in a recessed zone and in which the tail of a user can be taken without difficulty or picked up again.

Disadvantages of the state of the technique:

A disadvantage of commercially available cardboard boxes, as in DE 29520084 U1 and CA 2340574 A1 is described that a clean separation of the film can not be guaranteed or is not possible. For tearing the film must be pulled over the tear-off edge in these packages. Since the box has to be held in one hand, it is only possible to pull on the film with one hand, which has the disadvantage that due to the relatively small width of the hand compared to the film, very different tensile stresses are transmitted across the width of the film. This has the consequence that the film is unevenly separated or deformed and then zurückschnallst, which then often has a crippling and sticking of the film. Furthermore, such cardboard boxes deform easily when torn or even tearing. Another disadvantage is that these cardboard boxes are not reusable and thus represent unnecessary garbage. The outer tear-off edge can also easily cause injury. Fixed mountable devices, such as in DE 4308135 C2 described, have the disadvantage that it requires an increased effort from purchase to use, which could deter potential customers from buying. Disadvantageous are also the required space on the wall, as well as the uninterrupted provision of a rarely used in most households object.

devices, which have a solid state by their own weight and the Separation needed Can resist, have to correspondingly big and be heavy and are therefore not easy to stow.

The in print CH 639915 A5 on the one hand also has the disadvantage that the film is not actively separated, but must be pulled over a cutting edge, which in turn has an uneven stress distribution over the film cross-section result. On the other hand, a retightening of the film on the described recess designed as difficult because the film is not tangible in this way, but can be moved only by friction, which has the disadvantage that the film also has friction on the bottom and retightening is so difficult. In addition, it can not be ensured in this way that the user does not come into contact with the cutting edge.

The under DE 3779925 T2 described dispenser is relatively expensive to manufacture due to its large number of parts and the complicated mechanism. Furthermore, it has the disadvantage that it must be placed on a flat surface to be separated, since the film must be held with one hand and the mechanism must be operated with the other.

task The invention is a simple device for clean separation of foils or of sheet material in general, all the disadvantages of the prior art in a device solves.

The device should make it possible to separate the web straight and evenly without folding it and sticking it together. For this purpose, the film must be separated by a cut or a perforation, as in devices such as DE 29520084 U1 . CA 2340574 A1 or CH 639915 A5 described pulling the film over a tear-off and the resulting stretching of the film, always an unclean cut result and the jerky degradation of the elongation often leads to sticking of the film.

In addition, should prevents you from cutting on a sharp edge can.

The Device should not permanently deform by the separation process.

From ecological and economic reasons the device should be reusable. Thus, after a single purchase only the film roll, in which the outermost winding itself the packaging can be purchased.

Of further, such a device must be inexpensive to manufacture and thus to be offered to be accepted by the end user The device should be easy to use and manageable, so you can use it for the Do not place it on a surface or on a wall must attach.

Solution of the task:

The according to the invention or Perforiervorrichtung sees two longitudinally cut hollow cylinder before that over a hinge or joint movably connected to one another Leave gap open and can be pushed together resiliently. In the area the gap through which the material to be separated is guided, a knife edge is sunk. By squeezing the device The knife edge is stung by the material to be separated and engages in the recesses of the knife edge opposite Hollow cylinder. This process becomes the sheet material separated or perforated so much that it is very easy to separate is.

Advantages of the invention:

• – Gleichmäßige Abtrennung
• – Kein zusammenfalten und verkleben der Folie
• – Minimierung der Verletzungsgefahr
• – Keine bleibende Deformierung der Vorrichtung bei Benutzung
• – Ökologisch, da wieder verwendbar
• – Sehr kostengünstig herstellbar
• – Keine feste Montage notwendig
• – Leicht verstaubar
• – Vielseitig einsetzbar (verschiedene bahnförmig aufgerollte Materialien abtrennbar)
• – Frei handhabbar, da eine Hand die Folie halten kann, während die andere bequem sowohl die Vorrichtung halten, als auch durch zusammendrücken den Abtrennvorgang durchführen kann.

The invention combines the following advantages in one device:

• - Uniform separation
• - Do not fold and stick the foil together
• - Minimizing the risk of injury
• - No permanent deformation of the device in use
• - Ecologically, because reusable
• - Very inexpensive to produce
• - No fixed installation necessary
• - Easily stowed
• - Versatile use (different web-rolled up materials can be separated)
• - Freely manageable, as one hand can hold the foil while the other can comfortably hold the device as well as squeeze it.

Description of an embodiment:

One embodiment The invention is illustrated in the drawings and will be described in more detail below.

It demonstrate:

1 : A perspective view of the cutting device in the initial state

2 : A perspective view of the cutting device in the unfolded state when inserting a new roll

3 : An exploded perspective view of the cutting device

4 : A sectional view of the cutting device in the initial state

5 : A sectional view of the cutting device during cutting

6 : A sectional view of the cutting device in the unfolded state when inserting a new role

7 : A detail view of the depression in part 1 and the cutting blade mounted therein 3

8th : A detailed view of the depressions in part 2 into which the cutting blade penetrates during separation

The embodiment of the cutting or perforating device according to the invention shown in the drawings consists inter alia of two longitudinally cut hollow cylinders, the inner part 2 and the outer part 1 which are mutually in the hinge points 5 are stored. The knife 3 is protected on the outer part 1 in the depression 7 appropriate. In the device can as in 2 For example, shown a conventional cling film roll 4 be inserted so that one end of the film is out of the device. Subsequently, the outer part and the inner part are folded so far that the outer part of the stop 9 of the inner part engages. The spring lip 6 is deformed elastically. In the initial state for the use of the device, such as in 4 There is an equilibrium of forces between a force exerted by the spring lip 6 on the outer part 1 acts, and a force that comes from the stop 9 acts on the outer part. To disconnect holding the device in one and the protruding end of the film with the other hand. Now, when the device is compressed, the film is from the discharge 8th of the inner part in the recess 7 pressed the outer part. The fits between the performance 8th and the depression 7 can be so tightly selected during manufacture that the film is biased in the process just described and thus a separation is facilitated. At the latest when the device has been compressed so far that the tips 10 of the knife 3 into the wells 11 the discharge 8th intervene, pierce the tips 10 the foil. By the shape of the knife and the depressions 11 To ensure that the film is completely separated or is at least perforated to very narrow webs and then easy and straight demolished. The device is now in the state as in 5 shown.

After releasing the pressure on the device causes the resiliently biased spring lip 6 in that the device opens again to the initial state. For a further separation process can now on the recess 12 the film is picked up again and pulled out. The geometry ensures that at no time there is a risk of getting in contact with the knife and thereby injuring itself.

To insert a new film roll is in the initial position of the stop 9 in the inner part 2 pressed in, which makes it possible in the state as in 2 shown to arrive.

at the device described here is merely a an embodiment. Further Alternatives are conceivable.

• – Ersatz der Federlippe 6 durch eine herkömmliche Feder
• – Eine andere Lagerung von Außen zu Innenteil, beispielsweise durch eine Art Scharnier
• – Extra Lagerung der Folienrolle in der Vorrichtung um das Herausziehen der Folie zu erleichtern
• – Herstellung des Außenteils 1 aus mehreren Einzelteilen (z.B. zwei Deckeln und dem Längsteil), was eventuell die Produktionskosten senkt.
• – Ausführung der Stirnseite 13 so, dass die Vorrichtung senkrecht stehen kann.
• – Ausführung der Vorrichtung, statt aus Innen- und Außenteil, nur aus einem stark elastischem längs geschlitztem Rohr.
• - Auffüllen der Vorrichtung über eine zu öffnende Stirnseite 13.
• – Abflachung an der Außenseite von Teil 1 oder 2 um ein wegrollen zu verhindern
• – Weiche Einlagen an der Außenseite von Teil 1 oder 2 an den Stellen an denen man die Vorrichtung mit der Hand zusammendrückt

Here are some examples:

• - Replacement of the spring lip 6 by a conventional spring
• - Another storage from outside to inside part, for example by a kind of hinge
• - Extra storage of the film roll in the device to facilitate the extraction of the film
• - Production of the outer part 1 from several individual parts (eg two lids and the longitudinal part), which possibly reduces the production costs.
• - Design of the front side 13 so that the device can stand vertically.
• - Implementation of the device, instead of the inner and outer part, only from a highly elastic longitudinally slotted tube.
• - Filling the device via an openable end face 13 ,
• - Flattening on the outside of part 1 or 2 to prevent rolling away
• - Soft inserts on the outside of part 1 or 2 in the places where you squeeze the device by hand

Claims (1)

Cutting or perforating consisting of two longitudinally cut hollow cylinders, inserted into the web-rolled material, pulled out through a longitudinal opening and can be separated or perforated by pressure on the device, characterized in that the first outer part 1 and inner part 2 at the hinge points 5 or movably connected to one another by a hinge. 2nd outer part 1 and inner part 2 can be reopened after compression by a spring or the inner part 2 designed so that a spring lip 6 results, which serves the same purpose. 3. the in 2 , described process is limited by a stop or the geometry, so that the device is opened only a more or less wide gap at rest, through which the film can be pulled out again. 4. the stop for inserting a new role can be disabled or at least one of the faces of the device is hinged to insert a new role can. 5. the inner part 6 a discharge 8th may have, which brings the material to be separated before separation in a certain position. 6. the outer part 1 or the inner part 2 a depression 7 possesses, in which the knife 3 can be fixed or in which the material of the same is shaped so that it works like a cutting edge. 7. the discharge 8th Can have depressions into which the knife penetrates when squeezing. 8. the depression 7 and the discharge 8th can be mutually provided with such close tolerances that the material to be separated when clamping the device before the separation process between the two parts is easily clamped and tensioned on further squeezing, which favors the separation process. 9. the surfaces 14 and or 15 be designed so that they, for example, by small tips, the slipping of the film into the recess 7 , prevent when separating and so the material to be separated when squeezing the device by the discharge 8th being stretched before it hits the knife 3 is pressed. 10. the role 4 may be mounted in the device to facilitate the extraction of the material to be separated. 11. either the outer part 1 or the inner part 2 about a depression 12 which facilitates the picking up of the separated material. 12. the outer part 1 can consist of several parts. 13. at least one end face 13 can be shaped so that the device can stand vertically. 14. The device may have at least one flat on the outside, which prevents rolling when depositing. 15. The device can be occupied outside of the handles with soft material